Friday Harbor Airport Weather Forecast

    • 38
    • 50

    Slight Chance Rain

    • 39
    • 51

    Mostly Cloudy

    • 37
    • 50

    Mostly Cloudy

    • 37
    • 49

    Chance Rain

    • 36
    • 49

    Chance Rain

    • 39
    • 50

    Chance Rain

Today 26 Mar San Juan County

Partly sunny. A slight chance of rain Showers in the morning. A slight chance of rain Showers late in the afternoon. Highs near 50. South wind to 10 Mph becoming southeast in the afternoon.

Tonight 26 Mar San Juan County

Mostly cloudy. Lows in the mid 30s to lower 40s. Light wind.

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Friday Harbor Airport Temperature Statistics

March Temperature

Friday Harbor Airport (0 miles)

  • Lowest 10 March, 2026

    30 °F

  • Average March

    44.7 °F

  • Highest 20 March, 2026

    59 °F

Climate (2021–Present)

Friday Harbor Airport (0 miles)

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  • Average Low 2021–2026

    44.5 °F

  • Average 2021–2026

    51.9 °F

  • Average High 2021–2026

    59.7 °F
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